Apparatus for galvanizing containers



Sept. 3, 1935. 'J. w. HAND APPARATUS FOR GALVANIZING CONTAINERS o 0 ii 6 c gwuento'a Sept. 3, 1935. J w HAND 2,013,047

APPARATUS FOR GALVANI-ZING CONTAINERS Filed July 13, 1931 2 Sheets-Sheet 2 Patented Sept. 3, 1935 APPARATUS FOR GALVANIZING CONTAINERS James W. Hand, Elizabeth, N. .lL, assignor to Standard Oil Development Company, a corporation of Delaware Application July 13, 1931, Serial No. 550,449

2 Claims.

This. invention relates to improvements in galvanizing the interior and exterior of containers. The invention will be fully understood from the following description taken in connection with the accompanying drawings in which latterr Fig. 1 is a side elevational view with parts broken away of a device for carrying out the invention;

Fig. 2 is a top plan 'view of the device;

Fig. 3 is a front elevational view of the device taken along the Iine'III- -III of Fig. 2;

Fig. 4 is a perspective view of cradle and bracket with parts broken away; and

Fig. 5 is a top plan view of a container to be galvanized.

Referring particularly to the drawings, reference numeral I designates a receptacle or galvanizing'pot which is adapted to contain zinc or the like. The r ceptacle is disposed in a furnace 2, the hot gases of which are adapted to heat the zinc to a temperature of approximately 800 F. or any other suitable temperature to reduce the -zinc to molten condition. The upper portion of the receptacle is open to permit of the reception and withdrawal of a container 4, such as a drum or barrelpwhich is to be galvanized.

'I'he mechanism for supporting the container in..- cludes the aligned hollow shafts 5 and 6 which are mounted for rotation upon the receptacle above the normal level of the galvanizing solution. The hollow shafts constitute a substantially horizontal axis for the frame. The frame includes a cradle 1 having arms 8 reinforced by braces 9. Arms 8 carry bolts l which operate as supports for the container 4. A support bracket I2 is secured to the cradle extending transversely thereof. The bracket is provided with openings l3 in which the hollow shafts and 6 are secured. Arms M'and l5 project upwardly from the bracket and are chamfered at Hi to form a fixed tooth of the tongs. Arms l4 and are slotted at I1. A movable jaw I8 is pivotally mounted in each slot and cooperates with the arms I4 and IE to form the tongs. Movable jaws, l8 are provided with a dependent lug l9 having an opening therein.

The movable jaws are actuated to grip or release the edge of the container by the following arrangement of parts: A clamp rod 22 having a hand wheel 23 at its exterior end projects through hollow shaft 6 and into hollow shaft 5. The clamp rod 22 is provided with a fixed stop'26 and with a spaced stop 21 adjustably threaded to the clamp rod adjacent the end thereof. Stops 26 and 21 are positioned to engage the adjoining plied to the galvanizing of a container, it will (U11. ill-112.5)

surfaces of the tong jaws l9. Clamp rod, 22 extends through the openings 20 of the tong jaws. It will be seen that actuation of the hand Wheel 23 either clamps the tong jaws together or permits release of the tong jaws. vided with a chime 29 forming spaced edges at the junction of the head of the container with the body of the container. The head is provided with openings 30 and 3| at opposite ends of the head. The opposing end of the container is 10 closed. Having gripped the container to the frame in the upright position illustrated in Fig. 1, the frame with its attach-ed container is rotated downwardly into the galvanizing liquid by actuation of the pilot wheel 35 through the successive positions illustrated in.Fig. 1. Pilot wheel *35 rotates shaft 36 and gears 31, thereby rotating gears 38 and shafts 5 and 6. The axis of the frame supported by, shafts 5 and 6 is disposed 20 above the normal level of the galvanizing liquid a distance less than, but approximately the distance of the head of the container from the axis. The container is so disposed upon the frame that as the container'enters the liquid the openings 25 in its head are substantially aligned vertically. The container is initially dipped into the galvanizing liquid substantially horizontally with one opening only below the surface of the liquid. The contents of the container become rapidly heated to the temperature of the galvanizing liquid and displaced by the entrance of the galvanizing liquid through the submerged opening into the container. The heated gases are free to escape through the upper opening in the container head. The container isfurther dipped into the liquid to progressively increase the angle of inclination of the container while maintaining the upper opening above the level of the liquid until the container nears an approximately vertical positi n. The container is then further dipped into t e liquid to a vertical position whereby the head of the container is immersed in the liquid. Rocking of the container about the vertical positioninsures contact of the galvanizing liquid with the entire interior of the container. The pilot wheel is then rotated to raise the container from thegalvanizing liquid while permitting escape of galvanizing liquid from within the container. The thus galvanized container is then removed from the support and the operation is repeated with anew container.

While the invention has been described as apbe understood that it can be utilized for coating The container 4 is pro- 5 a container with a layer of any material and some of the advantages of the invention will be retained.

Various changes may be made within the scope of the appended claims in which it is desired to claim all novelty inherent in the invention as broadly as the prior art permits.

I claim: I

1. A machine for galvanizing the interior and exterior of a container having openings at opposite ends of its head, comprising a receptacle for liquid, a frame mounted for rotation about its horizontal axis' above the normal level of liquid, tongs projecting from the frame for gripping spaced edges of the head to hold the container with its head facing the axis, the axis being disposed above the normal level of liquid a distance less than but approximately the same as the distance of thehead from the axis, and means for rotating the frame to an inverted p0- sition; whereby the tongs submerge the head within the liquid to a substantially horizontal position.

2. A machine for galvanizing the interior and exterior of a container having a chime and spaced openings at opposite ends of its head, comprising a receptacle for liquid, a frame mounted for rotation about its horizontal axis above the normal level of liquid, tongs projecting from the frame for gripping the chime, the tongs each including a fixed jaw and a pivoted jaw, a rotatably mounted shaft, a fixed stop on the shaft adapted to actuate the movable jaw of one tong and a stop adjustably threaded to the shaft engaging the movable jaw of the other tong, the tongs being adapted to dip into the normal level of liquid in the receptacle upon rotation of the frame whereby the container becomes immersed in the liquid, and means for rotating the frame.

- JAMES W. HAND. 

